One of the essential problems in the development of oil and gas fields is the proper management of the industrial wastewater handling in order to prevent environmental pollution and provide a reliable utilization of potentially environmentally hazardous waste. As a result of technological operations at the Karachaganak field, industrial water is generated at the facilities, which is utilized by injecting it between the isolated salt dome depositions. The purpose of this paper is to provide information about the industrial water handling process in the Karachaganak field, and to facilitate knowledge sharing, and promotion of experience exchange.

The following topics are considered: review of the industrial wastewater disposal system in operation at the Karachaganak field; the wastewater disposal challenges associated with hydrocarbon production and the effect of additional development of the field on the disposal requirements; ways of optimization of the disposal system; acid stimulation as a solution to the well injectivity decline; effluent analysis; monitoring and proper measurement of injection volumes and limitations of the disposal system including capacity of the disposal polygons; injection volume allocation and the inaccuracy in the measurement of the disposal volumes during simultaneous injection; the maximum allowable water injection pressure.

From the beginning of the Karachaganak field development, KPO b.v. has accumulated a vast amount of knowledge in wastewater handling that can provide a useful basis from which to optimize and enhance future wastewater related processes. It is important to understand, however, that the development of the wastewater handling is dependant on the total field development, where the risks associated with the production forecasting affect all aspects of the oil and gas field development chain.

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